Method after

rpc_util.go:284–286

(_ *callInfo, attempt *csAttempt)

func (o HeaderCallOption) before(*callInfo) error { return nil }
func (o HeaderCallOption) after(_ *callInfo, attempt *csAttempt) {
	*o.HeaderAddr, _ = attempt.transportStream.Header()
}

// Trailer returns a CallOptions that retrieves the trailer metadata
// for a unary RPC.